CN211554414U - Optical cable with threaded steel pipe - Google Patents
Optical cable with threaded steel pipe Download PDFInfo
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- CN211554414U CN211554414U CN202020386113.0U CN202020386113U CN211554414U CN 211554414 U CN211554414 U CN 211554414U CN 202020386113 U CN202020386113 U CN 202020386113U CN 211554414 U CN211554414 U CN 211554414U
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- steel pipe
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Abstract
The utility model discloses an optical cable with threaded steel pipe, including the cable core, the cable core outward in proper order the cladding have water blocking tape, threaded steel pipe, block water yarn and oversheath, the inner wall of threaded steel pipe is smooth to be set up, the water blocking tape is filled gap between the inner wall of cable core and threaded steel pipe, the outer wall of threaded steel pipe is provided with the spiral line, the yarn winding that blocks water is in the recess of spiral line, the oversheath is crowded package and is in the outside of threaded steel pipe, the yarn that blocks water is filled gap between threaded steel pipe and the oversheath. The utility model discloses a screw-thread steel pipe cladding is in the cable core outside, because screw-thread steel pipe's outside salient is provided with the spiral line, can play the anti side pressure ability of certain buffering to in the middle of screw-thread steel pipe inboard and cable core, all be provided with the unit that blocks water between the screw-thread steel pipe outside and oversheath and block water the filling to the gap, can further improve the water blocking performance of optical cable, prevent that the optical cable from vertically seeping water.
Description
Technical Field
The utility model relates to an optical cable field, concretely relates to optical cable with screw steel pipe.
Background
In recent years, with the rapid development of 5G mobile communication, the network coverage is continuously expanded, and full signal coverage is basically realized, which means that the laying conditions of optical cables are more and more diversified, the environments for laying and using the optical cables are more and more complicated, and the mechanical performance of the optical cables is correspondingly required to be continuously improved.
Traditional optical cable adopts steel band or aluminium strip cladding cable core, steel band and aluminium strip play the effect of anti side pressure protection, but to some remote mountain areas, areas such as tunnel, the earth stone can change the displacement with time and even collapse, just so need further promote the anti side pressure ability of optical cable, among the prior art, adopt steel wire spiral armor in the cable core outside, can increase the anti side pressure ability of optical cable, but adopt steel wire spiral armor, the manufacturing cost of optical cable has been increased on the one hand, on the other hand the armor steel wire has increased the quality of optical cable, the cost of laying and transporting has also been increased.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an optical cable with threaded steel pipe, adopt the cladding of threaded steel pipe in the cable core outside, because the outside of threaded steel pipe is provided with the spiral line suddenly, can play certain buffering anti side pressure ability to in the middle of threaded steel pipe inboard and cable core, all be provided with the unit that blocks water between the threaded steel pipe outside and oversheath and block water the filling to the gap, can further improve the water blocking performance of optical cable, prevent that the optical cable from vertically seeping water.
In order to solve the technical problem, the utility model provides an optical cable with screw thread steel pipe, the cable core comprises a cable core, the cable core outward in proper order the cladding have water blocking tape, screw thread steel pipe, the yarn and the oversheath block water, the inner wall of screw thread steel pipe is smooth to be set up, water blocking tape fills gap between the inner wall of cable core and screw thread steel pipe, the outer wall of screw thread steel pipe is provided with the spiral line, the yarn winding that blocks water is in the recess of spiral line, the oversheath is crowded to be wrapped the outside of screw thread steel pipe, the yarn that blocks water is filled gap between screw thread steel pipe and the oversheath.
In a preferred embodiment of the present invention, the thickness of the threaded steel pipe is 0.5mm to 0.75 mm.
The utility model discloses a preferred embodiment, further include the cable core includes central reinforcement, many loose tubes, many the loose tube uses central reinforcement to set up in its periphery as the axis transposition, be provided with a plurality of optic fibre in the loose tube.
In a preferred embodiment of the present invention, it further comprises that the central reinforcement is a steel wire or an FRP rod.
In a preferred embodiment of the present invention, the cable core further includes a central beam tube, a plurality of tightly-packed optical fibers are disposed in the central beam tube, and the tightly-packed optical fibers include optical fibers and a tightly-packed layer coated outside the optical fibers.
The utility model discloses a preferred embodiment, further include the waterstop is around wrapping in the cable core outside.
In a preferred embodiment of the present invention, the wrapping overlapping rate of the water blocking tape is 25% to 45%.
The utility model discloses a preferred embodiment, further include the waterstop indulges the package at the cable core outside.
The utility model discloses a preferred embodiment, further include the cable core outside is indulged to be wrapped up and is had two-layer water-blocking tape, and is two-layer the overlap joint position of water-blocking tape is different.
In a preferred embodiment of the present invention, the outer sheath is a low smoke zero halogen flame retardant sheath.
The utility model has the advantages that: the utility model discloses a screw-thread steel pipe cladding is in the cable core outside, because screw-thread steel pipe's outside salient is provided with the spiral line, can play the anti side pressure ability of certain buffering, adopts screw-thread steel pipe to replace current aluminium steel tape and armor steel wire, compares in the anti side pressure ability of steel aluminium threaded steel pipe stronger, compares in the cost and the weight of armor steel wire threaded steel pipe lighter, when practicing thrift the cost, also be convenient for transport and lay.
In-process discovery at research and development, although the anti side pressure ability of cable core can be improved to the screw steel pipe, nevertheless seep water easily between screw steel pipe and cable core and the oversheath, the utility model discloses in the middle of screw steel pipe inboard and the cable core, all be provided with the unit that blocks water between the screw steel pipe outside and oversheath and block water the filling to the gap, can further improve the water blocking performance of optical cable, prevent that the optical cable from vertically seeping water.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the optical cable with a threaded steel tube according to the present invention;
FIG. 2 is a schematic structural view of the water-blocking yarn of the present invention wound around the outer wall of the threaded steel tube;
fig. 3 is a schematic structural view of another embodiment of the optical cable with a threaded steel tube according to the present invention.
The reference numbers in the figures illustrate: 1. a central reinforcement; 2. an optical fiber; 3. loosening the sleeve; 4. a water blocking tape; 5. a threaded steel pipe; 6. water-blocking yarn; 7. an outer sheath; 8. a tight wrapping layer; 9. a central beam tube.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1-2, an embodiment of the optical cable with the threaded steel tube of the present invention includes a cable core, the cable core is sequentially covered with a water blocking tape 4, a threaded steel tube 5, a water blocking yarn 6 and an outer sheath 7, the inner wall of the threaded steel tube 5 is smoothly arranged, the inner wall of the threaded steel tube 5 has no protruding burr or sharp thorn, the threaded steel tube 5 is prevented from scratching the cable core, the water blocking tape 4 is covered outside the cable core, the water blocking tape 4 fills the gap between the inner wall of the cable core and the inner wall of the threaded steel tube 5, the water blocking tape 4 expands when absorbing water and can play a role of blocking while absorbing water, the outer wall of the threaded steel tube 5 is provided with spiral grains, and the water blocking yarn 6 is wound in the groove of the spiral grains in this example and the outer sheath 7 is extruded outside the threaded steel tube 5, the water blocking yarns 6 are filled in the gaps between the threaded steel tube 5 and the outer sheath 7, and the gaps between the threaded steel tube 5 and the outer sheath 7 are reduced as much as possible in an extrusion coating mode, so that the water blocking performance of the optical cable can be further improved, and the optical cable is prevented from longitudinally seeping water.
Specifically, the thickness of the threaded steel pipe 5 is 0.5 mm-0.75 mm, and the thickness of the threaded steel pipe 5 can be adjusted according to the required lateral pressure resistance.
In this embodiment, the cable core is the layer-stranding structure, the cable core includes central reinforcement 1, many loose tubes 3 use central reinforcement 1 to strand the setting in its periphery as the axis, be provided with a plurality of optic fibre 2 in the loose tube 3, central reinforcement 1 can be steel wire or FRP pole, can adopt the central reinforcement 1 of different materials according to the demand condition of difference, loose tube 3 intussuseption is filled with fine oleamen, and fine oleamen can play the effect of blocking water in the loose tube 3 on the one hand, and on the other hand can play the effect of buffering and protection to optic fibre 2.
Referring to fig. 3, in other embodiments, the cable core may also be a central tube type structure, the cable core includes a central beam tube 9, a plurality of tightly-packed optical fibers are disposed in the central beam tube 9, and the tightly-packed optical fibers include optical fibers 2 and a tight-packing layer 8 that covers the optical fibers 2.
Specifically, in the two embodiments, the water-blocking tape 4 may be wrapped or longitudinally wrapped outside the cable core:
when the water-blocking tape 4 is wrapped outside the cable core in a wrapping mode, the wrapping overlapping rate of the water-blocking tape 4 is 25% -45%, the wrapping requirement is tight and flat, and the phenomena of package leakage and package loosening are not allowed at any position;
when the water-blocking tape 4 is longitudinally wrapped on the outer side of the cable core, the outer side of the cable core is longitudinally wrapped by two layers of water-blocking tapes 4, the two layers of water-blocking tapes 4 are respectively wrapped, and when the second layer of water-blocking tape 4 is wrapped, the lapping position of the first layer of water-blocking tape 4 is required to be different, so that water leakage from the lapping position of the water-blocking tapes 4 is prevented.
Specifically, in the two embodiments, the outer sheath 7 is made of a low-smoke halogen-free flame-retardant material, and the low-smoke halogen-free flame-retardant polyolefin sheath is ultraviolet-resistant, waterproof, mildewproof, and resistant to environmental stress cracking; and no acid gas is released, the equipment in a machine room is not corroded, and the flame-retardant cable is suitable for indoor environments with high flame-retardant grade (such as wiring in a ceiling, open wiring and the like).
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The optical cable with the threaded steel pipe comprises a cable core and is characterized in that a water blocking tape, the threaded steel pipe, a water blocking yarn and an outer sheath are sequentially wrapped outside the cable core, the inner wall of the threaded steel pipe is smoothly arranged, the water blocking tape fills a gap between the cable core and the inner wall of the threaded steel pipe, spiral grains are arranged on the outer wall of the threaded steel pipe, the water blocking yarn is wound in grooves of the spiral grains, the outer sheath is wrapped outside the threaded steel pipe in an extruded mode, and the water blocking yarn fills the gap between the threaded steel pipe and the outer sheath.
2. An optical cable with a threaded steel tube according to claim 1, wherein the thickness of said threaded steel tube is 0.5mm to 0.75 mm.
3. An optical cable with a threaded steel tube according to claim 1, wherein the cable core comprises a central strength member and a plurality of loose tubes, the loose tubes are arranged around the central strength member in a twisted manner, and a plurality of optical fibers are arranged in the loose tubes.
4. A fiber optic cable with a threaded steel tube according to claim 3, wherein the central strength member is a steel wire or an FRP rod.
5. An optical cable with a threaded steel tube according to claim 1, wherein the cable core comprises a central bundle tube, a plurality of tightly-packed optical fibers are arranged in the central bundle tube, and the tightly-packed optical fibers comprise optical fibers and a tight-packing layer which covers the optical fibers.
6. An optical cable of threaded steel tube according to claim 1, wherein said water-blocking tape is wrapped around the outside of the core.
7. An optical cable with a threaded steel tube according to claim 6, wherein the wrapping overlap of the water-blocking tape is 25% to 45%.
8. An optical cable of threaded steel pipe according to claim 1, wherein said water-blocking tape is wrapped longitudinally outside the core.
9. An optical cable with a threaded steel tube according to claim 8, wherein two layers of water-blocking tapes are longitudinally wrapped outside the cable core, and the overlapping positions of the two layers of water-blocking tapes are different.
10. An optical cable with a threaded steel tube according to claim 1, characterized in that said outer sheath is a low smoke halogen free flame retardant sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020386113.0U CN211554414U (en) | 2020-03-24 | 2020-03-24 | Optical cable with threaded steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020386113.0U CN211554414U (en) | 2020-03-24 | 2020-03-24 | Optical cable with threaded steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211554414U true CN211554414U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020386113.0U Active CN211554414U (en) | 2020-03-24 | 2020-03-24 | Optical cable with threaded steel pipe |
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| CN (1) | CN211554414U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031179A (en) * | 2021-03-22 | 2021-06-25 | 杭州富通通信技术股份有限公司 | Built-in water-blocking joint and semi-dry optical cable |
| CN113189722A (en) * | 2021-04-23 | 2021-07-30 | 宏安集团有限公司 | 8-shaped optical cable |
| CN114706176A (en) * | 2022-02-25 | 2022-07-05 | 宏安集团有限公司 | Ratproof pipeline optical cable |
-
2020
- 2020-03-24 CN CN202020386113.0U patent/CN211554414U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031179A (en) * | 2021-03-22 | 2021-06-25 | 杭州富通通信技术股份有限公司 | Built-in water-blocking joint and semi-dry optical cable |
| CN113189722A (en) * | 2021-04-23 | 2021-07-30 | 宏安集团有限公司 | 8-shaped optical cable |
| CN114706176A (en) * | 2022-02-25 | 2022-07-05 | 宏安集团有限公司 | Ratproof pipeline optical cable |
| CN114706176B (en) * | 2022-02-25 | 2024-04-26 | 宏安集团有限公司 | Rat-proof pipeline optical cable |
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